新一代黑亮單晶，其晶型較完整，中等強度。常用于樹脂砂輪體系和陶瓷砂輪體系，最明顯的優(yōu)點是自銳性良好，磨削效率高，磨削壽命良好，一次成型率高。

CBN620 a new generation of black single crystal, the crystal shape is complete, moderate intensity. Commonly used in resin and ceramic grinding wheel grinding wheel system system, is the most obvious advantages of good self-sharpening, high grinding efficiency, grinding life is good, high molding rate at a time.